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Leakage
General
NB! Leakage can cause serious mechanical break-
downs and an increased risk of slipping. Wash the
machine regularly to increase the chance of detecting
leakage at an early stage. Deal with leaks as quickly as
possible and refi ll if necessary.
Hydraulic fl uid
Leakage of hydraulic fl uid leads to an increased risk of
dirt getting into the hydraulic system which can lead
to breakdowns and mechanical damage. If you detect
hydraulic fl uid underneath the machine or on the base
plate it is probably due to leakage.
• Check for leakage at the hose connectors, cou-
plings and cylinders. Leakage can also occur at
other hydraulic components and can manifest itself
with a strip of dirt.
Cracks
General
A clean machine makes it easier to detect cracks.
The greatest risk of crack formation is:
• At weld seams
• At holes or sharp corners
Lower part
• Check in particular whether cracks have appeared
around outrigger mountings both on the lower part
and on the outriggers, gear ring mounting and weld
seams between the machine body and the track
sides.
Arm system
• Check in particular whether cracks have appeared
on the arm system’s joints, cylinder mountings and
weld seams.
MAINTENANCE AND SERVICE
Welding work on the machine
Only qualifi ed welders should carry out welding opera-
tions on the machine.
WARNING!
Risk of fi re. The machine contains fl ammable
liquids and components. Do not undertake any
welding in direct connection with fl ammable
liquids, e.g. in the vicinity of tanks, fuel lines or
hydraulic pipes. Ensure that there is a fi re-extin-
guisher on site at the workplace.
Risk of inhaling harmful substances. Toxic gases
can be formed. When welding indoors, use
equipment to extract welding fumes. Never weld
in the vicinity of rubber or plastic material. Use a
breathing mask.
Components that should not be welded
The following components should not be repaired but
replaced:
• Tool attachment
• Link
• Cotters
• Mounting plate
• Cylinders
• Hydraulic tank
• Cast parts
Recommended welding wire
Type Recommended material
Flex cored
wire
Esab OK 14.03 Tubrod
Class: AWS A5.28 E110C-G
Solid Elgamatic 100
Class: AWS A5.18 ER70S-6
Rod Esab OK 75.75
Class: AWS A5.5 E11018-G
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